Picker-check for looms.



M. 706,270. Patented Aug. 5, I902.

A. ST. ANDREWS.

PICKER CHECK FOB LUOMS.

(Application filed Jan. 2, 1902.]

(No Model.)

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ADOIJPII ST. ANDREWS, OF MANVILLE, RHODE ISLAND.

PlCKER-CHECK FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 706,270, dated August5, 1902. Application filed January 2,1902. Serial No. 88,178. (Nomodel.)

To all whom it mag concern:

Be it known that'I, ADOLPH ST. ANDREWS, a citizen of the UnitedStates,residiug at Manville, in the county of Providence and State novelconstruction of the picker-check, more fully set forth hereinafter.

To throw a shuttle fairly across the warp without injury to the fillingcarried in the shuttle, itshould be started easilv without a blow and.moved with increasing velocity. When the highest speed is attained,thepicker by which the shuttle is thrown should be checked and graduallyarrested. To secure these results, I provide the shuttle-box with a tubeclosed at the outer end. In this tube I place a piston, to the outer endof which I secure'the picker-check, which is perforated and slides onthe pickerrod. A tensile spring is connected with the picker-check andthe end of the shuttle-box.

Figure 1 is a longitudinal sectional view of a loom provided with myimproved pickercheck. Fig. 2 is a rear view of the shuttlebox and partof the lay of a loom, showing the picker and picker-check in theposition.

before the shuttle is thrown in solid lines and after the shuttle isthrown in broken lines. Fig. 3 isa sectional view of thepiston and tube,forming the support of the picker-check and the air-cushion. Fig. 4 is aview of the face of the picker-check, the picker-rod and the piston-rodbeing shown in section.

In the drawings,A indicates the loom-frame,

C C the shuttle-boxes,D the pickersticks, Ethe sweeps, and F theheel-springs.

a indicates thepicker which slides on the picker-rod a and extendsthrough a slot into the shuttle-box, stick.

The parts so far described form the-usual shuttle-throwing mechanism forlooms.

In carrying out my invention I secure to being operated by the pickerthe shuttlebox by means of the brackets a and a the tube a open at theend toward the center of the loom and closed at the outer end. with anescape-opening a Into the tube a I insert the piston-rod a, which fitsthe tube with a sliding fit. The bracket a is secured to thescrew-threaded end of the piston-rod a. It is provided with the eye a towhich one end of the spiral tensile spring a is secured, the other endof the springbeing secured to the arm a on the bracket a A cushion a, ofleather or other suitable material, is placed on the fiat face of thebracket or and covered by the metal plate a, which is secured to thebracket by the bolt 0.. The bracket, the cushion, and the plate a areperforated, so as to slide on the picker-rod er.

I find in practice that by the use of this device the shuttle is moreuniformly thrown from one shuttle-box into the other,that there are lessbreaks of the filling-thread, and that the check is far more durablethan pickerchecks as heretofore used.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a picker-check for looms, the combi nation witha tube and a piston-rod sliding in the tube, of a bracket secured to thepistonrod and having its face provided with a cushion, a metal platecoveringthe face of the cushion, and the tensile spring secured to thebracket and a fixed part of the loom near the end of the shuttle-box, asdescribed.

2. In a picker-check for looms, the combinationwith the shuttle-box, thepicker, and the picker-rod, of the tube a" closed at one end, theopening a near the closed end of the tube, and the brackets a and a ofthe piston-rod a, the bracket a secured to the piston-rod, the cushiona, the plate (L12 secured to the bracket by the bolt a, and the tensilespring 01, secured to the bracket and a fixed part of the loom, asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

in ADOLPH sr. ANDREWS.

mar Witnesses:

B. S. WEBSTER, JOSEPH A. MILLER.

I provide this tube, near the closed end,

roo

